Altra Men's Lone Peak 3.5 Mid Mesh Trail Running Shoe Synthetic Imported Rubber sole Shaft measures approximately mid-top from arch Shaft measures approximately mid-top from arch DESIGNED TO IMPROVE: Natural Foot Positioning, Toe Splay, Comfort. PLATFORM: Fully cushioned Zero Drop platform and FootShape toe box. CUSHIONING: Medium. STACK HEIGHT: 25mm. LAST: SD6-M. MIDSOLE: Dual layer EVA with A-Bound. OUTSOLE: DuraTread rubber with TrailClaw. INSOLE: 5mm Mountain Footbed. UPPER: Abrasion-resistant mesh with minimal seams. OTHER FEATURES: Sandwiched StoneGuard Rock Protection next to the foot; Natural Ride System, 4-Point GaiterTrap System, DuraTread. IDEAL USES: Trail running, hiking, fastpacking, warm weather conditions. WEIGHT:12.5oz./354g